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[BZ #5225]

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* stdio-common/vfscanf.c (_IO_vfwscanf): Don't misuse wp pointer
	to keep track of end of %[ format string element.
This commit is contained in:
Ulrich Drepper
2007-10-28 08:58:24 +00:00
parent 88197030d5
commit 4c6b2202cb
4 changed files with 24 additions and 8 deletions
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18
stdio-common/vfscanf.c
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@@ -272,7 +272,7 @@ _IO_vfscanf_internal (_IO_FILE *s, const char *format, _IO_va_list argptr,
{ \
CHAR_T *old = wp; \
wpmax = (UCHAR_MAX + 1 > 2 * wpmax ? UCHAR_MAX + 1 : 2 * wpmax); \
wp = (CHAR_T *) alloca (wpmax * sizeof (wchar_t)); \
wp = (CHAR_T *) alloca (wpmax * sizeof (CHAR_T)); \
if (old != NULL) \
MEMCPY (wp, old, wpsize); \
} \
@@ -2314,7 +2314,7 @@ _IO_vfscanf_internal (_IO_FILE *s, const char *format, _IO_va_list argptr,
if (__builtin_expect (fc == L'\0', 0))
conv_error ();
wp = (wchar_t *) f - 1;
wchar_t *twend = (wchar_t *) f - 1;
#else
/* Fill WP with byte flags indexed by character.
We will use this flag map for matching input characters. */
@@ -2365,9 +2365,10 @@ _IO_vfscanf_internal (_IO_FILE *s, const char *format, _IO_va_list argptr,
/* Test whether it's in the scanlist. */
runp = tw;
while (runp < wp)
while (runp < twend)
{
if (runp[0] == L'-' && runp[1] != '\0' && runp + 1 != wp
if (runp[0] == L'-' && runp[1] != '\0'
&& runp + 1 != twend
&& runp != tw
&& (unsigned int) runp[-1] <= (unsigned int) runp[1])
{
@@ -2405,7 +2406,7 @@ _IO_vfscanf_internal (_IO_FILE *s, const char *format, _IO_va_list argptr,
}
}
if (runp == wp && !not_in)
if (runp == twend && !not_in)
{
ungetc (c, s);
goto out;
@@ -2590,9 +2591,10 @@ _IO_vfscanf_internal (_IO_FILE *s, const char *format, _IO_va_list argptr,
/* Test whether it's in the scanlist. */
runp = tw;
while (runp < wp)
while (runp < twend)
{
if (runp[0] == L'-' && runp[1] != '\0' && runp + 1 != wp
if (runp[0] == L'-' && runp[1] != '\0'
&& runp + 1 != twend
&& runp != tw
&& (unsigned int) runp[-1] <= (unsigned int) runp[1])
{
@@ -2630,7 +2632,7 @@ _IO_vfscanf_internal (_IO_FILE *s, const char *format, _IO_va_list argptr,
}
}
if (runp == wp && !not_in)
if (runp == twend && !not_in)
{
ungetc (c, s);
goto out2;